Hi @baggz,
not that I know of. But proper pH sensors usually have a analog output, so you can connect it to UniPi Neuron's or Axon's analog input.

From your profile I guess you want to measure the amount of nutrients in the water for flowers. If you know basic electronics stuff, I would recommend you some cheap eBay pH sensor for start, such as this. You will learn how they work and how to calibrate them, because they degrade in time.